// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/browser/frame_host/render_frame_host_factory.h"

#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "content/browser/frame_host/frame_tree_node.h"
#include "content/browser/frame_host/render_frame_host_impl.h"

namespace content {

// static
RenderFrameHostFactory* RenderFrameHostFactory::factory_ = NULL;

// static
std::unique_ptr<RenderFrameHostImpl> RenderFrameHostFactory::Create(
    SiteInstance* site_instance,
    RenderViewHostImpl* render_view_host,
    RenderFrameHostDelegate* delegate,
    RenderWidgetHostDelegate* rwh_delegate,
    FrameTree* frame_tree,
    FrameTreeNode* frame_tree_node,
    int32_t routing_id,
    int32_t widget_routing_id,
    bool hidden,
    bool renderer_initiated_creation)
{
    if (factory_) {
        return factory_->CreateRenderFrameHost(
            site_instance, render_view_host, delegate, rwh_delegate, frame_tree,
            frame_tree_node, routing_id, widget_routing_id, hidden,
            renderer_initiated_creation);
    }
    return base::WrapUnique(new RenderFrameHostImpl(
        site_instance, render_view_host, delegate, rwh_delegate, frame_tree,
        frame_tree_node, routing_id, widget_routing_id, hidden,
        renderer_initiated_creation));
}

// static
void RenderFrameHostFactory::RegisterFactory(RenderFrameHostFactory* factory)
{
    DCHECK(!factory_) << "Can't register two factories at once.";
    factory_ = factory;
}

// static
void RenderFrameHostFactory::UnregisterFactory()
{
    DCHECK(factory_) << "No factory to unregister.";
    factory_ = NULL;
}

} // namespace content
